Ganged circuit breaker arrangement

DETAILED DESCRIPTION Briefly, the present invention is a ganged multiple pole circuit breaker arrangement for a transformer, and is specifically directed to a new and improved operating arrangement for simultaneously operating first and second similar multiple pole circuit breakers between their open and closed positions.
Standard oil circuit breakers available for transformer secondary protection include multiple poles, i.
e.
, two circuit breakers for two wire, single phase, and three circuit breakers for three phase.
The multiple poles are mechanically related to a single operating point or member, predetermined movement of which results in simultaneous operation of all poles between their open and closed positions.
In the present invention, two similar circuit breakers are mounted on a sturdy, common frame.
Their single operating points are each pivotally linked via suitable levers to a first common pivot pin, with the position of the first common pivot pin being fixed.
Their single operating points are additionally each pivotally linked via suitable levers or rods to a second common pivot pin.
Guide means fixed to the common frame defines a predetermined rectilinear path which allows guided rectilinear movement of the second common pin, while preventing any lateral movement thereof.
The axes of the first and second common pins are parallel, and the guided rectilinear movement of the second common pin directs the axis of the second common pin in a plane which includes the axis of the first common pin.
An operating mechanism which includes a single operating shaft disposed through the transformer tank wall, is arranged to operate the second common pin in the rectilinear path in response to actuation of the master operating handle attached to the external end of the shaft.